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Ⅰ.はじめに
脳卒中後疼痛(central post-stroke pain:CPSP)は,脳卒中を原因とする中枢性神経障害性疼痛に分類される.薬剤抵抗性の疼痛であり,外科的治療も視野に入れて治療に当たる必要がある.CPSPに対して運動野刺激術(motor cortex stimulation:MCS) の有効性が報告されているが7,11,12,14),近年,機器の進歩に伴い脊髄刺激術(spinal cord stimulation:SCS)の有効性が示唆されている1).SCSは経皮的に脊髄硬膜外腔へ刺激電極を挿入できるため,MCSと比べ侵襲度が低いことが大きな特徴である.今回,CPSPに対して8極電極を用いたdual lead SCSの有効性を検討したので報告する.
Spinal cord stimulation (SCS) has become the preferred option for neurosurgical management of several intractable pains. To evaluate effects of dual lead SCS using two quad leads for central post-stroke pain (CPSP),we retrospectively reviewed eight consecutive patients with CPSP who underwent SCS. Six (75%) of eight patients obtained more than 50% pain relief during test stimulation,and the efficacies continued for about 12 months in five (83%) of six patients. There were no significant complications. SCS is less invasive neurostimulation treatment and provides pain relief for some cases of CPSP.
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